junit 5 extensions (#2233)

* junit 5 extensions

* fix exceptions

* add back parent

junit5/src/test/java/com/baeldung/TestLauncher.java

@@ -0,0 +1,37 @@
+package com.baeldung;
+
+import org.junit.platform.launcher.LauncherDiscoveryRequest;
+import org.junit.platform.launcher.TestExecutionListener;
+import org.junit.platform.launcher.TestPlan;
+import org.junit.platform.launcher.core.LauncherDiscoveryRequestBuilder;
+import org.junit.platform.launcher.core.LauncherFactory;
+import org.junit.platform.launcher.listeners.SummaryGeneratingListener;
+
+import static org.junit.platform.engine.discovery.DiscoverySelectors.selectClass;
+
+import java.io.PrintWriter;
+
+import org.junit.platform.launcher.Launcher;
+
+public class TestLauncher {
+    public static void main(String[] args) {
+
+        //@formatter:off
+        LauncherDiscoveryRequest request = LauncherDiscoveryRequestBuilder.request()
+                .selectors(selectClass("com.baeldung.EmployeesTest"))
+                .configurationParameter("junit.conditions.deactivate", "com.baeldung.extensions.*")
+                .configurationParameter("junit.extensions.autodetection.enabled", "true")
+                .build();
+        
+        //@formatter:on
+
+        TestPlan plan = LauncherFactory.create().discover(request);
+        Launcher launcher = LauncherFactory.create();
+        SummaryGeneratingListener summaryGeneratingListener = new SummaryGeneratingListener();
+        launcher.execute(request, new TestExecutionListener[] { summaryGeneratingListener });
+        launcher.execute(request);
+
+        summaryGeneratingListener.getSummary().printTo(new PrintWriter(System.out));
+
+    }
+}